- A30Hz
- B50Hz
- C60Hz
- D120Hz
Explanation:
In India, the AC mains supply is referred to as single-phase alternating current and corresponds to a voltage of 230 V at a frequency of 50Hz, similar to most European countries. Whereas in the USA, AC mains supply uses 60Hz.
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The bending of light as it passes from one medium into another is commonly known as:
The correct relation is (Where
Horizontal component of earth's magnetic field;
= Vertical component of earth's magnetic field and B = Total intensity of earth's magnetic field)
|
(a) B = |
(b) |
(c) |B| = |
(d) |
Which is the correct diagram of a half-wave rectifier
|
(a) |
(b) |
|
(c) |
(d) |
Two coherent sources have intensity in the ratio of . Ratio of (intensity) max/(intensity) min is
|
(a) |
(b) |
(c) |
(d) |
A 10 micro-farad capacitor is charged to 500 V and then its plates are joined together through a resistance of 10 ohm. The heat produced in the resistance is
|
(a) 500 J |
(b) 250 J |
(c) 125 J |
(d) 1.25 J |